Sash-lock



Patented 1an. I0, |899.

No. maar.v

H. BLISS.

SASH LOCK.

(Application led Dec. 20, 1897.)

(No Model.)

AUNTTED STATns RTTENT Genion.

Hin-An BLISS., or TAUNToN, MASSACHUSETTS, ASSIGNOR or ONE-HALF To WILLIAM T. PLAGE, or DIGHTQN, MASSACHUSETTS. l

.snee-Loon.

S IEECIFICAT-IOIT iorming part of Letters Patent No. 617,630, dated January 10, y1899.

` pplioatin filed December 20, 1897- Serlai No. 662,645. (No model.)

To @ZZ whom it mayooncern: Y Be it known that LIIIRAM BLISS, a citizen of the United. States, residing at Taunton, in. the county of Bristol and State of Massachusetts, have inven ted anew and useful Sash. gli', fwhich the following isaspeeioation.

This invention relates to sash-looks, its obv beirrgto provide a simple and e'fcient filevioemhioh may be easily attached to a te windowsashwithout requiring the services Eef-@skilled mechanic and will serve to lock ther'two sashes in/any desired position rela-. tively to each other. f

Vitii.l this object in view theinvention oon- 1,5' sists offf-the, several details of construction, iwmbination, and arrangement of. parts, as 'wivibe fxlly described hereinafter and paroii'larly pointed out in the claim.

'n the drawings, Figure 1 is a perspective iew of portions of two window-sashes, showljg my improved look applied to lock the q ashes intheir closed..V positions. Fig 2` isa eotional view of the locking device and part ifof the sashes. Fig. 3 is a group showing the l several parts of thelooking device separated.

Similar reference-numerals indicate similar' parts'in the several gures. p

' 1 indicates thetop railof the lower window-,f/ sash, and 2 a side rail of the upper sash.' f 3o 3 indicates an angle-bar the horizontal arin of lwhich is provided with spurs 4c on its lower face and is also perforated for the passage of aserew l5, by means of which it may'beiirm-ty securedto the top rail lfof the lower' sash,

thespirs being embedded therein, as will be readily understood.' Thevertical arin'of the anglebar is provided with a threadedy open'- ing, in which the thumb-screw 7 works. V,Sindicatos a cap or shoe open at its front 4o and bottom andjadapted to iit loosely over vthe vertical arin of theangle-bar and 'composed of vertical sides, a horizontal top, and a vertical rear wall 9.v The rear` wall 9 of the cap or shoe is thicker at its upper'than at its l-o er end, and its inner face inolines outwar y from top to bottom, and thus forms a wedge. j

f In operation the-angle-baris seeuredto the top rail-,of the .lower sash with the rear face of the vertical arln extending parallel to the side rail of the upper' sash, but removed therefrom ,sufficiently to permit the shoe t0 be itted over the vertical arm, with the outer face of its rear wall in engagement with the side rail. The top wall of the shoe will preferably be about a quarter of an inch above the upper end of the vertical arm of theanglebar, andthe thumb-screw will be tightened up to force the shoe into close Contact with the side rail. The pressure thus exerted will be sufficient to 'lock' both sashes against movenner.v under ordinary conditions; but

should 4extra force be applied to either sash to move it the wedge Ashape of the rear wall of the shoe will cause it to bind tighter against -the' edor the thumb-screw and the side rail of the sash, and the more force applied to move either the upper or lower sash will simply result' in causing the lookingdevices to bind tighter.

It is obvious that the device can be used -to lock either or both sashes in a partly-open position.

It will be understood that changes in the form, proportion, and the minor details of construction may be resorted to Without departingfrom the spirit 0r sacrificing any' of the advantages of this invention.

Having thus/described the invention, what"v claim :is/ "l f sash-lock, comprising a'vertically-dispo 'ed bar designed to be secured to thetop rail of the lower sash, a thumb-'screw mount-l ed on the said ba'r, and a cap or shoe arranged on the bar and provided with a vertical Wedge- .shaped back arranged to be engaged by the screw and adapted to be forced by the same into contaotwith the upper sash, said'wedgeshaped back ,being capable of causing the 'sashes to ,lpek more firmly when subjected to pressure, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in` the presence of 4two witnesses; y-

HIRAM BLISS. fvlfitnessesz` i LILLA E. SNOW, Funnix. S. HALL. 

